- a granular igneous rock consisting of a mix of light and dark minerals, the former being calcic plagioclase feldspars, and the latter orthorhombic pyroxenes.
Origin of norite
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Examples from the Web for norite
Near the ores there are likely to be granitic rocks, which, like the ores, seem to be segregations from the norite magma.
In New York the emery deposits are segregations of aluminum and iron oxides in norite (a basic igneous rock).
In Canada great portions of the eastern portion of the Dominion are formed of gabbros, norite, anorthosite and allied rock types.
- a variety of gabbro composed mainly of hypersthene and labradorite feldspar
C19: from Norwegian norit, from Norge Norway + -it -ite 1
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012
- See gabbro.
- A coarse-grained igneous rock, very similar to gabbro but containing orthopyroxene instead of clinopyroxene.
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